Not so long ago, you used to be able to buy a small sticker to place by your door saying - no cold callers, we do not buy items over the doorstep..... whatever happened to them? even if you opened the door - you simply point to the message and politely close the door.... - believe me, they work.... back in the mid nineties, I managed a sales force of over 300 'door-knockers' ( in the North East)... the local media advised everyone to use them... I pulled the sales force out and moved onto the next town..